Circulator-check.



N. M. LA FORTE. 'CIRCULATOR CHECK. Arms/(non mm APR. 26, 915.

1 1 87,535 Patented June 20, 1916.

2 SHEETS-SHEET I.

WHn-caoea 34. awa zw A hfl 94AM,

N. M. LA FORTE.

cmcum'on CHECK.

APFLICAUON FELED APR. 25. l9i5- 1 ,1 87,535. Patehted J 11110 20, 1916,

2 SHEETS-SHEET Z-- Witness ii. a mum.

UNITED STATES PATENT OFFICE.

NOR-BERT M. LA FORTE, OF BALTIMURE, CGOLZNG SYSTEMS COMPANY, A

MARYLAND, ASSTGNOR TO THE MOTOR CORPUR-AYIION OP MARYLAND.

CIRCULAIOR-CHECK.

Application filed April 26.

To all whom it may concern:

Be it known that I, Nonnnn'r M: liiin'ric, a citizen of the United States of i-hnerieii, and resident of the city of Baltimore, State of Maryland, have invented eerlnin new and useful llllIH'OYtli'HEitH in (in lll ltih' fft i i of which the tollowing is ii speeiiielizx n,

The principle ilU'UlHtl in woli r the walls of the rylinder and coinhusiion rhzinr her of an internal amid/nation engine well to di'ii rm-l rhirrle well unahrsi'uod. 'nter is passed through th i' \lin ler jacket and thence thmu e'h radiator, which is snhji-vt to :1 draft of air, and then hark to the water jzu-liei. Th1 eirenlntion of the enter in thisv way is neeomplished h three ditl'et" ent rerognim-d nn'thmh. 'lhere is the t in h hi-eh the hot water ri es from the lnnln-t to the ml oi the rad ator and he comes (ooled as it passes downward through the t'nhes of the radiator, while the water displaced from the l'ndizltol takes the place of the heated wide:- in the lint/rt which in turn i l llbfitkl int the top or the radiator. 'lhia (-ii'i-ulntiou. \whii-h i termed therenn siph nie ix nmintziined hy gravity whi -h muses the denser water at the hiwer ienn H Eli iron:

v i a lurly win-n it stands idle (or u long: period and suli jeet to n comporutlvely low tern- Specification of Letters Patent.

Patented June 20, 1916.

1915. Serial No. 23.801

('Zll'lilil'itkl are hevesifiul') in order to start and run until the engine has reached the It will he noreri running: temperature.

up; 11 nt on wonsiderntion that in the ordin:1r cooling system. the thermo-s1phon1c 01reulntion with eonsuquent cooling of the water passing through the radiator and jacket and hum: of lhe engine, will continue even though the engin is idle and cooling wiil trznnneite only w hen all parts reach the temperature of the :lt'lllUE-Plltl'fi. so when the operator desires to Mart the engine he finds it (h ienlt and mint rewrt to the expedients which we have dewrihed. and even then the engine do not operate with normal elli i'i -ni' 'v until wn'nnd up.

lisidilitor hoods and rovers to preventeooline are ;l lznnilinr sight in all countries where freezing temperatures are eon'nnon, lint oven with the use of lUll protection. 'I'H il! oi' the eng ne to :1 temperature at :1 ti upeinli htli iiihily the m1 i:- left idle vo -d \Wnthezt menus for retarding the (00]- on on idle motor is the ohjet-t of eniion i thix end lprm ide means wally when th enfrom th indi "*lnt ill i thus. prevent ilini wider. here the mined le; liltllilfw of :1 ef the (\pe pie'vimi ly (h el; \.1';i'e r liii'h open:

' 1 end i:: hold rrzingz'ed to ,i' Wind; d or l nlli be maintained for hours after the engine. has stopped. Immediately on starting, the engine, the valve opens either by pressure of tho Vator or by operation of a devire, oonttcd to the engine for that purposr. and the riroulation of the vvater with the usual cooling effect begins. lhus. *vhile the lisadvan incident t rooting ot' the engine, when idle are :n'onletl. the danger of overheating l' v starting; the, ongine. when the circulation is checltod. not inrurrel'l.

in the 21(('Ulll])llll \'ill (lrawin; jl liavo illlistftitutl an engine and portions of a cooling system to which my invention has heen applied.

Figure l is a side elevation of an engine. radiator and connections providl-d nith the cirrulator described in my co-pending applibation No. 876.134. and tho rirrulator check of this invention; Fig. 2 is a detail of the check; Fig. 3 is a (liag'ranm'iatic View sl'iowing the eirculator rheeh in eonnertion with a pump; Fig. 'l shou's the oirculator check applied to a thormo honic system. the check heint actuated by means of tho engine suction; Fig. i' shovvs a somewhat similar arrangen'ient with the eht-rlt oporated by tho exhaust pre sure: and Fig. (3 shims an uleulriral de'v ire f r artuatlngg' thi- (ri: rulal or rhwrk.

llel'vrring to "lhe drawing lv numerals." the lfumstrurtlon shor n in l-i; n l inrludos radiator l. a cylinder misting; with wa nertions from tho ia liluor to the \van r jlM'l -l at the top it tlLtl lanioni 4. in tinlattrr ronnertion. l have sh 'nn an rirrulator onsisling ot' a noyzle 5 in the hotnnn connection 1 and a tuhr t3 eading l'r ns thimailil'old to the non lo. A portion of thr exhaust gases passing through the tnhn is thus; discharged and lit .v tin: eih rt olarrelnu ating the oirvaalating' anion. l haw; al o shovvn in this radiator ronnortiou a valve seat 7 with a. Chet-lt- \alvl 8 adapted to oprn fret-l}: in tho (lll'tlflltlll ol' ili't'lllllllllll so that, it, does not int rl ere \vilii the rirvulalion. \\'l]il(' t e engine is running. lau' so arranw-d with an v suilahle moans as a spring or llnweight of tho valve. or a Wr ght in ali' li i'm to the valve, that it nill \vh-nn ou inn stops and prrvrnl rir -l'ilation ol' the Water uhilo tho engine i idle and ronse quent dill'usion ol' the heat nel'iessary to maintain the normal and most elliril-nt temheraturv ol the engine. The means for olos ing the valvl ma v ho 2: spring. gravilv, pres sure. vat-uum or any snitahle means and the intent of the rlaims is to inrludo any and all surh altrrnative and :a' 'uivalent oxpedients. In Fig. 21 i have shown iliagrammatlically a pump 1* together with tho riroulatozt: wit 1 tonsisting ot' a seal. and a valve "vvhil'h may he the, same as that; in tho [Win trims rase. pivo at at It and so Weighhal .n troll d means of a spring I an i' Cit -4 but subject against thermo-siplnaiio circulation adapted to ho l reol v opened when to the eirrulating effort of the pump.

in the dt-virv shown in Fig. l. the uater is rirruhued h the thermo siphonic system, through the radiator 1 and water jtH'hOt 12, int-los ng the upper portions of tho cylinder and romhustion chambers in tho rylinder misting In the lower radiator ronin-rtior i there a valve 14' mounted to li1; on a rnntral transverse pivot 15 ha\- inn an arm it at right angles to the pivot. This arm i which is rigidly serured to the \alve shalt or pivot eonnorted at its end hv m ans of a slot and pin 17 to a thrust rod 19 engaging a diaphragm 19. mounted centrally in a rhaml'ier 20. One side ol' this rhanlhrr is tillod with air at atmospheric pressuro and from the other side the air may he exhaustrd, as hv way of a pipe 21 leading: to tho intake manil'old 22.

Fig. 5 shows a similar devire similarly op rated hv prt-ssurlled through a pipe .5 1 from tlnexhaust manil'old :24.

in Fig. i? l havo shown olertrioallv ope 'ated means for rontl'olling the rirculator rhor-lt. lo the ham ol the invention shovvn thrrla gravity valvr 23 \vhirh rests on th seat fl through \vhil it tho water in one ol' iln: ronnrrtions in the rirrulating svs t m passes in the dirr-l-tlon ol' the arrows. "lln' val'vo stem I is prol'erahlv of soil iron and arts as the wore of tin solenoid \vhirh may his in r rnit with the mag nMo. grn rator or ignstion svvitrh or any rut-H nt. (In llou ol \vhirh is prartirallv r oinv-nl nt with tho operation ol' the motor. l ll valve trnrls to seat. h v lhr lit'tlUll of 5a. il or a sprint J19 as shown. hut \vllen the rirrnil is ('lH.--tll inst prior to, it it is a halter ignition or at the starting ol' the m tor t it is th magneto or generator (Eli'- ('Ill the sulhiinill .28 is energized and tends to draw l'hr llllt 2T upvvard toward the. renter ol th roll so that the valve 1 is lifted \\'('ll oll' its seat and tho (tirrulatinn flvstl-m is opIan-ll. So long as the engine runs. tho ole ioid retains its tlttltlltltlll l'or thrl' l'r and the valvo remains open. When vnynal0lir-I tlnpas-ant ol' rurrent and the valve living rellulsed returns to its seat h v spring prossure or l'oree ol gravitv. or holh.

I have thus drsorihed ments ol' mv invention sperilirallv and in detail in order that their nature and operation ma he fully understood; hovvover, tho sperilir erms ln'i'rili are used in their desrriptiurather than in their limiting senso, and the sropo of tho invention is defined n the (ltlllllS- tlir various emhodisystem for internal zon ong'mw ronsistmg of a water a radiator and wnneotions between 

